Broom for street-sweeping machines



Sept. 10, 1 2 J. H. APPLETON BROOM FOR STREET S WEEPIL'G MACHINES Filed June 15, 1925 2 Sheets-Sheet fizz/0225+.- JSGP Z J Z UZvpZeton 59 Maw Patented Sept. 10, 1929.

warren stares JOSEPH H. APPLETON, OF OSHKOSH, VI' ISCOHSIN, ASSIGNOR TO'LEACH COMPANY, I

PATENT OFFICE.

BROOM FOE strann'r-swnnrme vameni ies,

Application filed June is, 1925. Serial in). 37,016.

The invention "relates to street-sweeping; machines, and isparticularly concerned with an improved broom for use in such machines. p

The principal object of the invention is to provide a broom of the character described which will sweep a surface thoroughly without streaking the same.

Other objects and advantages of the invention will undoubtedly occur to those skilled in the art upon an understanding of the construction and arrangement of the broom.

In order that the invention may be readily understood one structural embodiment of the same is presented in the accompanying drawings and following description, but such embodiment is intended merely for the purpose of exemplification as the invention is obviously susceptible of embodiment in other structurally modified forms coming equally within the comprehensive scope of the appended claims.

In the drawings: L

Fig. 1 is a side view of a portion of a street-sweeping machine equipped with the broom of the invention;

Fig. 2 is a sectional view taken on the line 22 of Fig. 1; and

Fig. 3 is a sectional view through one of the bristle retaining members of the broom showing the component parts of the memher in separated relation.-

As will be observed in the drawings the broom of the invention is a medially articulated structurecomposed of two generally similar broom sections 10 and 11 which are arranged angularly in end to end relation with ,the bristles at the inner end of one section lapped with those of the other to present an uninterrupted expanse of bristles throughout the length of the broom.

The streetsweeping machine with which the broom is associated includes a main frame 12. A counter-shaft 18 extends transversely of the frame 12, and is journaled in two bearing brackets 14: which are mounted on the sides of the same. The broom is rotated from the counter-shaft 13, and the counter-shaft is in turn rotated from a suitable source of power on the machine through a chain'and sprocket connection 15. p

The broom sections 10 and llare support ed in a vertically movable frame which consists of two sidebars 16 and a medially angul'ated axle 17. The bars16 arepivotally secured to the brackets 14: concentricallyof the axis of the counter-shaft 13, and extend at an inclination downwardly and rearwardly. The lower free ends of the bars 16 carry brackets 18 in which are fixedly secured'the ends of theaxle 17. The brackets18 may be adjusted toward or away from the pivotal axis of the bars 16 by means of attaching bolts 19 and set screws 20. The bolts 19 extend through aligned apertures in the bars 16 andbrackets 18, and the apertures in the latter are elongated to permit of slight adjustment. The, screws 20 pro vid'e adjustable abut-merits against which the brackets 18 bear. If a greater adjustment is desired than that possiblewith the slots inthe brackets 18, the bolts 19 may be inserted through other apertures provided for that purposefin' the bars 16. The axle 1 7 is positioned transversely of the frame 10 of the machine in a horizontal plane, with the ends ofthe axle in advance of the middle-of the same, and the broom sections 10 and 11.

arerjournaled upon thegtwo straight portions21and 22 of the axle. k

Each of the two broom sections 10 and 11 consists of two spaced journaling hubs 23 and 24 which are connected at corresponding sphericalpoints with a plurality of bristle-retaining members 25. The bristle-retaining membersare 'composed of outwardlv facing channel strips 26 in'which the ra dially extending bristles 27 are clamped by rods28f up j The outer hub 23 of the broom section 10 is provided with a sprocket 29, and a chain 30 connects the sprocket 29 with a sprocket 31 on the collar shaft 13,' wherebythe broom section 10 is driven from the countershaft Inasmuch as the plane in which the sprocket 29 and the chain30 operate is ataslightly acute angle to the counter shaft 13, the pe-- ripheral portion32 of the sprocket 31 is tiltably assooiated' with the hub portion 33 gears 34, the hubs 24 are provided with an portions.

nular faces 36 which bear against each other at 37 and serve to maintain the broom sections in properly spaced relation. The brackets 18 provide thrust bearingsat 38 which serve to prevent separative movement of the broom sections.

The bristle retaining members 25 of each of the'broom sections 10 and 11 are alternately long and short, and the bevel gears.

' then on the other,as clearly shown in Fig. 2.

I claim: 1. A broom for street-sweeping machines, comprising two axle portions arranged angularly in end to end relation, and a medially articulated broom journaledon the axle 2. A broom for street-sweeping machines, comprising a one-piece medially angulated axle, a frame in which the ends of the axlearerigidly supported, and two rotary broom sections journaled on the axle at opposite sides of the angle therein.

3. A broom for street-sweeping machines, comprising two ,rotatry broom sectionsarranged angularly in, end toend relation; each of said sections consisting of two spaced hubs, and a plurality of alternately long and short bristle-retaining members extending between correspondin peripheral portions ot the hubs with the long members of one broom section opposite the short members of the other, whereby to prevent streaking along -a line beneath the junction of the sections. 7 I

4. A broom for street-sweeping machines,

7 comprising two rotary broomsections arranged angularly in end to end relation; each of said N sections consisting of two spaced hubs, a plurality of alternately long and short bristle-retaining members extending; between corresponding peripheral portions of the hubs with the long members of one broomsectio'n opposite the short members of the other, whereby to prevent streaking along a line beneath the junction of the sections, and a bevel gear on the inner hub of one broom section for meshing with the corresponding gear on the other.

5. In a street-sweeping machine, a powertransmitting shaft extending transversely of the machine, aframe hinged to swing about the axis of the shaft at the rear of the same, a medially angulated axle carried horizontally bythe frame at the rear of the same with the two straight end portions of the axle converging rearwardly in equally spaced relation to the shaft, a medially articulated broom having the two sections thereof journaled on the two end porportions of the axle in end to end relation, a driving connection vfrom the shaft to one broom section, and another driving connection from that broom section to the other.

In testimony whereof I have hereunto subscribed my name.

' JOSEPH H. APPLETON.

lUtl

CERTIFICATE or CORRECTION.

Patent No. 1,727,627. Granted September 10, me, to

JOSEPH H. APPLETON.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 85, for the Word "spherical" read "peripheral"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 1st day of October, A. D. 1929.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

